#10 x 13/64" x 7/16" Polished 18-8 Stainless Steel USS Flat Washers (15 pcs.) Diameter: 13/64" Diameter 2: 7/16" Thickness: 1/32" Material: Stainless Steel Finish: Polished Hardness: 18-8 Style: USS Type: Flat Washer Box of 15. A flat washer is a thin, usually round, plate with a hole in the middle that is normally used to distribute the load of a threaded fastener. USS flat washers have a large, wider body. SAE flat washers are machined to a tighter specification and have a smaller outside diameter.
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